Maine Republican Sen. Susan Collins said Thursday that she was "not going to say" that she would "never" vote for Democrat Hillary Clinton in light of Donald Trump's racially tinged remarks about the federal judge in the Trump University case.

Trump's comments attacking U.S. District Court Judge Gonzalo Curiel's Mexican heritage were "an order of magnitude more serious" than his other negative statements, Collins told The New Yorker.

"This is a difficult choice — and it's one, like many of my colleagues, that I am struggling with," Collins said regarding any choice between Trump and Clinton. "It's not like we have perfect candidates from whom to choose in this election."

But she won't rule out Clinton, though.

"I worked very well with Hillary when she was my colleague in the Senate and when she was secretary of state," she told the New Yorker. "But I do not anticipate voting for her this fall.

"I'm not going to say never, because this has been such an unpredictable situation, to say the least."

When pressed further on whether it was possible that she might support Clinton, Collins told the New Yorker: "That is true.

"But I do want to qualify that by saying it is unlikely that I would choose to vote for the Democratic candidate," she added.

Maine Republican Sen. Susan Collins said Thursday that she was "not going to say" that she would "never" vote for Democrat Hillary Clinton in light of Donald Trump's racially tinged remarks about the federal judge in the Trump University case.